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Compress Image
Smaller file, same format it came in
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Resize Image
LiveResizing changes how big the picture is; compressing changes how big the file is. If a form asks for 800 px wide, or a 4032 px phone photo is going into a slot that shows 1200, type the numbers you need and the aspect ratio stays locked so nothing comes back stretched.
What it does
- A width, a height, or both, up to 12,000 px
- Aspect ratio locked so nothing stretches
- Keeps the format it came in
Your files
Gone within the hour.
Files are uploaded over HTTPS, used only to run this tool, and deleted from our server automatically about an hour later. Never sold, never used to train anything.
Frequently asked questions
What is the difference between resizing and compressing an image?
Resizing changes the dimensions: 4032 x 3024 pixels becomes 1200 x 900. Compressing leaves the dimensions alone and re-encodes the picture so it takes fewer bytes on disk. Resizing does usually shrink the file as well, because there are fewer pixels to store, but that is a side effect rather than the point.
What size should I resize my photo to?
For a full-width web banner, 1600 to 2000 px wide is plenty, and 1200 px is enough for a picture inside an article. Profile photos are square and rarely need more than 800 x 800. For print, work at about 300 pixels per inch, so a 4 by 6 inch photo wants 1800 x 1200. If a form states an exact size, use that number and nothing larger.
Can I make a small image bigger without it going blurry?
No. Enlarging spreads the pixels you already have across a larger area, which stays smooth but cannot invent detail that was never captured, and past roughly 2x the original dimensions edges and small text look visibly soft. There is no AI upscaling here. If you need a genuinely bigger version, go back to the original file rather than enlarging a small copy of it.
I asked for 800 x 800 and got 800 x 600, why?
With the aspect ratio locked, the two numbers are treated as a box to fit inside rather than a shape to force, so one side comes back smaller and the proportions survive. That is what stops a 4:3 photo being squashed into a square. If you need both numbers exactly, turn the lock off and accept that the picture will be stretched.
My photo is too big for an upload limit, should I resize it?
Only if the dimensions are the oversized part. A 4032 px photo going into a 1200 px slot is carrying about 11 times the pixels it needs, and cutting the dimensions is the fastest fix available. If the dimensions are already correct and the file is still too heavy, use Compress Image instead: it keeps the pixel size and offers three quality levels to trade against file size. One image at a time here, up to 50 MB.
Does resizing change the file type or lose anything else?
A JPG comes back a JPG and a WebP comes back a WebP, but anything else, HEIC, GIF and BMP included, comes back as a PNG. A JPG also has to be re-encoded when it is saved, so a resized JPG gives up slightly more than just the pixels you dropped. Rotation is applied to the actual pixels, so phone photos do not open sideways, though EXIF details such as camera model and GPS location are not carried into the resized copy. The upload travels over HTTPS and is deleted from our server automatically about an hour after the job.